Abstract
In this pilot study, using a standard 40 mL gadolinium (Gd) chelate contrast dose, dual-rate (first 20 mL at 0.5 mL/sec; remaining 20 mL at 1.5 mL/sec) and fixed-rate (entire 40 mL dose at either 0.7 mL/sec or 2.0 mL/sec) injection schemes for multistation, bolus-chase magnetic resonance angiography (MRA) were compared in normal volunteers. Signal-to-noise ratio, contrast-to-noise ratio, and physician preference were determined for nine arterial segments. At the terminal station (calf), the dual-rate contrast injection improved arterial signal and contrast compared with both fixed-rate injection schemes and improved subjective vessel appearance compared with the 2.0 mL/sec, but not the 0.7 mL/sec, fixed-rate scheme. (C) 2000 Wiley-Liss, Inc.
Original language | English (US) |
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Pages (from-to) | 769-775 |
Number of pages | 7 |
Journal | Journal of Magnetic Resonance Imaging |
Volume | 12 |
Issue number | 5 |
DOIs | |
State | Published - 2000 |
Externally published | Yes |
Keywords
- Arteries, extremities
- Arteries, MR
- Gadolinium
- Magnetic resonance (MR), contrast agents
- Magnetic resonance (MR), vascular studies
- Magnetic resonance(MR), angiography
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
- Radiological and Ultrasound Technology